Compound walking beam for well-drilling rigs



R. w. JAMISON.

COMPOUND WALKING BEAM FOR WELL DRILLING RIGS.

APPLICATION. FILED 1ULY24, 1920.. RENEWED OCT. 29.1921.

1,417,604. Patented May 30, 1922.-

2 SHEETS-SHEET 1.

R. W. J-AMISON. COMPOUND WALKING BEAM FOR WELL DRILLING RIGS APPLICATION FILED HJLY 24. 1920. RENEWED qcT. 29!19 21.

1 417,60 1, Patented May 30, i922.

2 suE s-sHEH 2.

the crank motion for .UNI'TED VSTA ROBERT W. JAMISQN, or son-Tn: ni ne rh COMPOUND WALKING. BEAM Amman ,fi e 11.115 2 19 0 Se ial l Q- easi t Rigs, of which the following is a specifioation, reference being had to the accompanying drawings.

This invention relates to walking beams u h s e 'us in con tio ith We drilling machines.

Onel'objeet of the invention is to provide for a relatively slow upward movement of the cable supporting the well drilling tools with a relatively fast drop of the cable.

A further object is to provide means whereby the movement of the drill cable may be halted without having to stop, the movement of the crank shaft or other inachil ery whereby reciprocation is ordinarily given to the cable, and in this connection it is an object of the invention to provide a walking beam consisting of two sections, one of which is operatively connected 0 the drill cable, and the other of which is operatively connected to the power operated means for oscillating the walking beam, and to provide means whereby these two sections may be shifted into or out of operative engagement with each other to thereby permit the stoppage of that section carrying the drill cab e without necessarily s opping the movement of the crank shaft or other oscillating means.

Other objects of construction and arrangement of parts as will be hereinafter more fully stated.

' My invention is illustrated in the accompanying drawings, wherein Figure lis a side elevation of a Well drilling rig provided with my invention, the two sections of the walking beam being disconnected;

' Figure 2 is a fragmentary top plan of the walking beam; Figure 3 is a section on the line 23- 3 of Figure l;

Figure 4 is an elevation partly in section of the walking beam structure showing the two sections of thewalking beam in. operative engagement;

Figure 5 is a top plan view of the walk- Specjfioation of Letters Patent. 7

-.b e. e the shaft. 14.

the hearing 19- for am to do wi h the de ail 1 se erallfl 'trbm sash other We spacin ronwrinxenmnnme mes,"

heaewee Qeteber e 192 semim. 511,450.

i s been; in ehses e with eaeh l2 the ewe ts 11 beingin sec i n;

eterri g; t .t ereigures l d signates pe ellehs ll beams and 7a hei of vertical supporting beams he si l e ms and supporting being spaced from each other. 12 d sighetesen rright r gidly ettaqhed o with the two sectio s NT QFFITQ'E.;

Patented" 30,1922;

othe the g i the .sillflbeems and. ormed adjacen its u re aid wit a vertiee ly sa s-d ng p r r M ehted upon the si ls a one end ther of is a shah. .4: hibh may be moun d 1 .1. bearing be eseil ete or may be fi ed.

This shatt elahs a support t r a e il a eble Whieb: i f rmed. n t o secti ns 1 a d 716 hese sect ns. being termed to emand being hel t g the ether suitable mean fo by belts f. or qontro t ng e es o h hi perpese h els where 15 1,6 a e termed o p ovid lo git din ly v ex ending .10 wh n the two sections are held. tegether, and provid W ist p n 2.0, whereb the bsbillatable been ae ated to Bi map I V 'llhewefmahnewlls of the lotli are p e stablyt e-11 ed. n thieh ess o provide tracks with whieh a side 22. engages the slid being fo med i s opp site edg s wi h gr o es to r ee these wee s, two section belted toget by b0l s'2 e to embrac t.- 9 break 24: o a c an it wh h s suitably c nne e a $0HFQ of. Powe (no shown)- The e t smit es t t e sl e car y rollers 2 whi bear arch the confron ing feces of t s U81 Any suitable. may e Pr de fo aat t i.

the beam rmed f the m mb rs 15 end 16 vreallyshppert ng the slid 2 within 'the slot 18, and I do not wish to be s bperetive y 0 and this s id s fo m wi l be osc lat d upon t p o 1 and h it will e recip o a n t the Oseilhtably moun ed een a shaft 27 suitebly supported in a d ex ending acr s th space between the upr ghts 1.1 is a Walk n beam- Thi beam compose o two se tiehe, one at the seet ohs b ing designa e been i termed of two "beams29 s ace 7105 r Ibis seetibn 28 o he Wa king mem er 0 i a spacing member 31 adjacent the pivoted end of the beam, and disposed between these two'beams are the pulleys'32 and This;

beam, composed of the two members 29, ex-

tends through-thezslot v 113 iini. the. upright '12 v and is guided thereby. The second section of the walking beam is designated generally- 34:

"and 'is'also composed of two beams or membersi35 connected at their freeends by transverse members 36, each of these'beams 35 be inglongitudinally slotted, as at 37, the shaft :QZpassing through these slots. The pulley 32 is concentric-tothis shaft, thatis concentrio to the center of motion of the walking beam as a whole.-

The free end of the section 34: ofthe walking beam carries a transoperating over a rack to engagethe lever f1n either of its V oscillated together to drop the drilling toolverse "pin38, to which connected. The 20 at 39, and as -member 28 are spaced follows thatthe pin 38 will seat in the recess members follows shifted soas'to retract the beam 34 the pitman' 21 is free ends of the beams 'form 28 are inwardly recessed, as

ing the section these beams 29 forming the 39'and that'when theparts are soarranged, the pitman 21' wi11 be'disposedbetweenthe A 4E0 which is pivoted, at 4:1, and which at its upper end is connected by'a link 42 to one of the beams 35. lever may have any suitable locking device shifted positions. Attached to the free end'ofone of the beams 29 and extending a guard formed of a strip of metal 43 which is attachedto the under facfejo-fthe beam 29 "andextends tojthe tip end of the beam 29,

"then extends downward and slightly rearward, and then extends rearward andupward and is attached to'theunder face of the beam 29. -A drill cable "44 extends over the crown of the derrick,ifor instance, (not shown) and 1s connected, of course, tothe usual drill jars and tools,'an'dthis cable extends downward from 'the crown 'of' the derrick beneath the pulley 33, then"upward and rearward around the"'p ulleyx 32, and

' downward to the usual winding drum (not shown), I

The operation ofkthis mechanism is' as Assuming that the lever 41' is and carry the wrist pin 33 into the seat 39, then it follows that upon a rotation ofthe crankshaft 25 in the direction of the arrow, that the two sections 28 and-34t the walkingbeam will be alternately lift" and in the usual manner. desired to stop the recip- 'When,' however, 1t 1s rocations of the, cable at and of the'drill tools without, however, stopping the opera- 'tion of the driving mechanism, then the lever AO is shifted in a direction to'shift the section 34: of the walking beam toward the right 1), and then it follows from eachother, it? The particular Y motion which I have applied in the operafor a relatively slow 29. The section'34e of the walking 'beam is longitudinally shiftable upon its pivot 27 by a'lever down therefrom 1s simply act to carrying the wrist. pin 38 out the recesses 39 (as in Figure that the reciprocation of the section Bet-of tl1e;;walking beam'will not affect section 28, and that the section 34:

in Figure 4, of 1ts seat n will oscillate without actuating the section QS'until the section at is raised to carry the wrist ,pin 38 opposite the mouths of the recesses 39, and then if the lever be shifted,

" the pin 38 will be earned into these recesses and the two sections 28 and 3a of the walking beam will be locked together for unitary oscillation. The guard 43 prevents the sec tion 341- from accidentally moving rearward and thus carrying the pin 38 into engagement 1n the recesses 39. r

' It will be seen that in effect I have provided a walking beam formed'in two sections and with a shiftable clutch whereby one section may be shifted into or out of clutching engagement with the other section.

advantage of the crank beam is that it provides W lifting of the drill cable and a relatively fast drop. This'is due to the fact that the crank 2a is nearer to the axis of the beam orelem'ent 15 when the cable is tion of the walking 'being dropped than it is when the cable is This being'lifted It will be, seen that this mechanism is very simple, that it maybe readily retracted, and that by its means the two sections of the walking beam may be readily coupled to or uncoupled from each other,

and that by its means a differential movement of the drilling cable is secured. The

uard 43, of course, acts to prevent the en- 'gage'inent of the two sections of the walking beam unless the lever 44 has been fully thrown, a's'unless the lever has been fully thrown, the curved faces of the guard will shift the section 34 of the walking beam outward, that is away from the section 28. It will be understood that the guard 43 also acts to prevent the outer beam from shifting rearward'too far under the inner beam, that is prevent the wrist pin 38 of the beam 3% from being retracted to such position beneath the beam 28 that the wrist pin could not engage in the recess 39. In the drawings, the angular distance between the beam 23 and 84c is xaggerated, but itis to be understood drops entirely below the guard 43. The upright 12 acts to prevent lateral movement of the two sections of the walkingbeam and holds both of said sectlons from any'side motion. It may be stated that this compound walking-beam has been found extremely effective in actual service, '1 claim I 1. A construction scribed including a pitman, a walking of the character deconstantly reciprocated beam with which said "pitman is adapted to engage at one end, and

that the'wrist pin 38 never 7 scribed including means for shifting the pitman into or out of engagement with the end of the walking beam. 1

2. A construction of the character described including a constantly reciprocated pitman, a walking beam. having a notch at one end, and means for shifting the upper end of the pitman into or with said notch to thereby operatively connect the pitman with the walking beam or disconnect it therefrom.

3. A construction of the character dea constantly reciprocated beam having a notch at one end, means for shifting the upper end of the pitman into or out of engagement with said notch to thereby operatively connect the pitmanwith the walking beam or disconnect it therefrom including a member pivoted at one end and having operative engagement at its other end with the free end of the pitman, and means for shifting said member longitudinally to carry the pitman into or pitman, a walking out of the notch in the walking beam.

4. A walking beam of the character described composed of two sections, both of said sections being pivoted upon a common pivot and one of said sections being longitudinally slidable section, the slidable section having means whereby it may be oscillated, the other section being adapted to be connected to an element to be reciprocated, the two sections being formed at one end for interlocking engagement when the shiftable section is shifted in one direction; and means for shifting the said shiftable section into or out of engagement with the other section.

5. A scribed formed of two sections, one of said sections being pivotally supported for oscillation and being adapted to be connected to an element to be reciprocated, the other section being sli'dably mounted for movement toward and from the first named section, the two sections at one end being formed for interlocking engagement when the slidable section is shifted in one direction and for disengagement when the slidable section is shifted in the opposite direction, and manually operable means for sliding said shiftable section into or out of engagement with the other section.

6. A walking beam of the character described formed of two sections, one of said sections being pivoted at one end for oscillation and at its opposite end formed with a longitudinally extending recess, the other section being longitudinally slidable with reference to the first named section and being oscillatably mounted and carrying a wrist pin adapted for insertion into said recess upon the longitudinal movement of the second named; section in one direction, a pit man connected to said wrist pin whereby the last named end of out of engagement with relation to the other walking beam of the character depower may be transmitted to. oscillate the slidable .section, means for shifting or-out of engagement with the first named section. 1

7; A walking 'beam includingarpivoted member .having a recess in one end, a:--pitman having a wrist' connected to means whereby the pitman may be reciprocated, and manually operable means for shifting said pitman into or out of engagement withthe recessed extremity of the first named section and holding the pitman engagement.

8. mechanism of thecharacter described comprising a walking beam composed of two sections, one of said sections being pivoted adjacent one end and the other endof the section being formed with a longitudinally extending recess transverse to the arc of movement of the section, the other section being formed of two members spaced from each other to embrace the first named section and having sliding and pivotal movement upon the same center of motion as the first named section, a pitman connected to the wrist pin, said wrist pin, when the shiftable section is shifted in one direction, engaging in said recess to lock the two sections'of the walking beam together and disand manually operable the slidable section into pin and operatively engaging them. from the recess upon a move-- ment of the shiftable section in the reverse direction, means man, and manually operable means for shifting the shiftable section in either direction and locking it in shifted position.

9. A structure of the character described including supporting members, a vertically slotted guide element, a walking beam section disposed between the supporting members and extending through the said slot and being adapted to be be reciprocated, the free end of this walking beam element being formed with a longitudinally extending recess, a pivot member passing through the supporting members and through the walking beam section and pivotally supporting it for oscillation, a second walking beam section comprising two members spaced from each the first named section and longitudinally slotted at one end, the pivot member of the first named section passing through said slots whereby the second section is longitudinally shiftable with relation to the first named section, a wrist pin extending between the two members of the second named section and adapted, when the second named section is shifted in one direction, to engage in said recess and when it is shifted in the opposite direction to disengage from said recess, a power operated pitman connected to said wrist pin, the members-of the second namedsection' operating on each side of the for reciprocating the pitconnected to an element to other to embrace guide element,

and-manually operable means 1 forshiftingt e shiftable section of the out of engagement with first named section;

its 'wrist pin into or walkingjbeam to' carry the recess in the ;,ll Alstructure of the character described comprising two uprights, a walking beam section composed of two members spaced and operatively engaged with each other, a pivot pin passing through'the uprights and through the'two members of the section and pivotally supporting it, pulleys mounted between said members of the walking beam section, the free extremity of thewalk ng beam section being formed with a longitudinally extending recess, a second walking beam section formed of two members dis- .posed on each side of the first named section and spaced-from eachrother, the members of the second named section being formed with longitudinal slots through which the pivot pin of the first section passes, a wrist pin carried bythe free ends of the members forming the second section, a pitman con-V nected to said wrist pin, the wrist pin being lnsertible into said recess or removable therefrom as the second sectlon of the walk ing beam is shifted longitudinally, means for reciprocating the pitman, a lever, and a link connecting the lever to the second lnamed section of the walking beam whereby the second named section may be shifted.

111A strncture'of the character described comprising two uprights, a walking beam section composed of two members spaced from but extending parallel to each other and operatively engaged with each other, a pivot pin passing through the uprights and through the two members of the section and pivotally supporting it, pulleys mounted between said members of the walking beam section, the free extremity of the walking beam section being formed with a longitudinally extending recess, a second walking beam section formed of two members disposed on each side of the first named section and spaced from each other, the members of the second named section being formed with longitudinal slots through which the pivot pin of the first section passes, a wrist pin carried by the free ends of the members forming the second section,

* a' pitman connected to said wrist pin, the V i wrist pin being insertible into said recess'or removable therefrom as the second section of the walking beam is shifted longitudinally, means for reciprocating thepitman, a lever, a link connecting the lever to the second named section of the walking beam whereby the second named section may be shifted, and a guard attached" to the free extremity of one of the members forming the first named section of the walking beam andextending downward and rearward therefrom to engage said wrist pin and prevent accidental shifting of the second named section relative to the first named section.

' 12. A structure of the character described comprising two uprights, a walking beam section composed of two members spaced from but extending parallel to each other 7 and operatively engaged with'each other, a pivot pin passing through the uprights and through the two members of the section and pivotally supporting it, pulleys mounted between said members of the walking beam section the free extremity of the walking beam section being extending recess, a second walking beam section formed of two members disposed'on each side of the first named section and spaced from each other, the members of the second named section vbeing formed with longitudinal slots through which the pivot pin of the first section passes, a wristpin .carried by the free ends of the, members forming the second section, a pitman connected to said wrist pin, the wrist pin being insertible into said recess'or removable therefrom as the second section of the walking beam is shifted longitudinally, means A for reciprocating the pitman, a lever, a link connecting the lever to the second named section of the walking beam whereby the second named section may be shifted, and a vertical guide extending upward between the members of the second named section and holding them from lateral movement, sai guide being vertically slotted to receive the members of the first named section of the walking beam. y

In testimony whereof I hereunto affix'my signature.

ROBERT w. JAMISON.

formed with a longitudinally. 

